<section id="content">
    <section class="vbox">
        <header class="header bg-black navbar navbar-inverse">
            <div class="collapse navbar-collapse pull-in">
                <?php echo $this->element('top-nav'); ?>
            </div>
        </header>
        <section class="scrollable" id="pjax-container">
            <?php echo $this->fetch('content'); ?>
        </section>
    </section>
    <a href="#" class="hide nav-off-screen-block" data-toggle="class:nav-off-screen" data-target="#nav"></a>
</section>